cis-tomcat101-10-9

name	cis-tomcat101-10.9
description	Configure connectionTimeout (Automated)
category	cis-tomcat
version	1.0.0
author	cyberstrike-official
tags	["cis","tomcat","linux","java","configuration","hardening","security"]
cis_id	10.9
cis_benchmark	CIS Apache Tomcat 10.1 Benchmark v1.0.0
tech_stack	["linux","tomcat","java"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

10.9 Configure connectionTimeout (Automated)

Description

The connectionTimeout setting allows Tomcat to close idle sockets after a specific amount of time to save system resources.

Rationale

Closing idle sockets reduces system resource usage which can provide better performance and help protect against denial of Service attacks.

Impact

This timeout will also apply when reading any request body when disableUploadTimeout is not set to false.

Audit Procedure

Locate each connectionTimeout setting in $CATALINA_HOME/conf/server.xml and verify the setting is correct.

# grep connectionTimeout $CATALINA_HOME/conf/server.xml

Remediation

Set the connectionTimeout for each connector in $CATALINA_HOME/conf/server.xml ensure to the optimal number of milliseconds based on hardware resources, load, and number of concurrent connections.

connectionTimeout="60000"

Default Value

By default this is set to 60000 (i.e. 60 seconds).

References

1. https://tomcat.apache.org/tomcat-9.0-doc/config/http.html

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	4 Secure Configuration of Enterprise Assets and Software Establish and maintain the secure configuration of enterprise assets (end-user devices, including portable and mobile; network devices; non-computing/IoT devices; and servers) and software (operating systems and applications).
v7	5.1 Establish Secure Configurations Maintain documented, standard security configuration standards for all authorized operating systems and software.	●	●	●

Profile

Level 2